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Takashi Iwai d8bbfab02d ALSA: rawmidi: Fix NULL dereference at proc read 
commit b2ce0027d7 upstream.

At the implementation of the optional proc fs in rawmidi, I forgot
that rmidi->ops itself is optional and can be NULL.
Add the proper NULL check for avoiding the Oops.

Fixes: fa030f666d ("ALSA: ump: Additional proc output")
Reported-and-tested-by: Mark Hills <mark@xwax.org>
Closes: https://lore.kernel.org/r/ef9118c3-a2eb-d0ff-1efa-cc5fb6416bde@xwax.org
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230916060725.11726-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-10-06 13:16:21 +02:00
Documentation ALSA: docs: Fix a typo of midi2_ump_probe option for snd-usb-audio 2023-10-06 13:15:47 +02:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch KVM: x86/mmu: Stop zapping invalidated TDP MMU roots asynchronously 2023-10-06 13:16:20 +02:00
block blk-mq: fix tags UAF when shrinking q->nr_hw_queues 2023-09-23 11:14:33 +02:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto crypto: sm2 - Fix crash caused by uninitialized context 2023-10-06 13:16:21 +02:00
drivers serial: 8250_port: Check IRQ data before use 2023-10-06 13:16:21 +02:00
fs nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() 2023-10-06 13:16:21 +02:00
include scsi: core: ata: Do no try to probe for CDL on old drives 2023-10-06 13:16:21 +02:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:52:59 +02:00
io_uring io_uring/net: fix iter retargeting for selected buf 2023-09-23 11:14:34 +02:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel ring-buffer: Do not attempt to read past "commit" 2023-10-06 13:16:10 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:14:29 +02:00
mm Revert "memcg: drop kmem.limit_in_bytes" 2023-09-23 11:14:38 +02:00
net mptcp: process pending subflow error on close 2023-10-06 13:16:20 +02:00
rust rust: macros: vtable: fix `HAS_*` redefinition (`gen_const_name`) 2023-08-09 21:15:07 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:14:33 +02:00
scripts locking/atomic: scripts: fix fallback ifdeffery 2023-10-06 13:15:56 +02:00
security selinux: fix handling of empty opts in selinux_fs_context_submount() 2023-09-23 11:14:36 +02:00
sound ALSA: rawmidi: Fix NULL dereference at proc read 2023-10-06 13:16:21 +02:00
tools perf build: Define YYNOMEM as YYNOABORT for bison < 3.81 2023-10-06 13:16:18 +02:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:53:29 +02:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Revert ".gitignore: ignore *.cover and *.mbx" 2023-07-04 15:05:12 -07:00
.mailmap mailmap: add entries for Simon Horman 2023-08-16 09:53:10 +01:00
.rustfmt.toml rust: add `.rustfmt.toml` 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS sound fixes for 6.5 2023-08-25 08:48:14 -07:00
Makefile Linux 6.5.5 2023-09-23 11:14:39 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.